Dragons of Krad

When Derek's dragonling, Zantor, and Zantor's best friend, Pola, disappear into the mists of Krad, they are given up for dead. But Derek knows they are alive, because he can hear their cries for help within his head. But when Derek sneaks into Krad to rescue Zantor and Pola, he finds it's a much more dangerous place than he had ever imagined.